AI Search & GEO Glossary: every term explained

Complete dictionary and definition of terms in AI Search and GEO.

All categories

GEO (Generative Engine Optimization)

AI Engines

SEO (Search Engine Optimization)

Analytics

Content Strategy

Content Personalization

Tailoring the content a visitor sees, its message, format, or examples, based on who they are or how they arrived, including visitors referred by an AI assistant.

content-brand-strategy-cat

Competitor Analysis

The practice of studying competitors' content, positioning, and visibility, including how often and how favorably they are cited by AI assistants, to guide a brand's own strategy.

content-brand-strategy-cat

Content Freshness

How recently a page's content has been reviewed, updated, or expanded, a factor that search engines and AI assistants both weigh when a topic is time-sensitive.

content-brand-strategy-cat

Content Gap Analysis

A method for identifying the topics, questions, or subtopics that competitors cover, or that users ask AI assistants about, but that a brand's own content does not yet address.

content-brand-strategy-cat

Ghost Citation

A case where an AI assistant's answer clearly draws on a brand's content or data without naming or linking the source, leaving the contribution invisible to the reader.

ai-visibility-analytics-cat

Sentiment Analysis

The use of natural language processing to determine whether the tone of a mention, review, or AI-generated answer about a brand is positive, negative, or neutral.

ai-visibility-analytics-cat

AI Dark Traffic

Traffic sent to a website by AI assistants and chatbots that shows up in analytics tools as direct traffic, because no referrer data is passed along with the click.

ai-visibility-analytics-cat

Long-tail Keywords

Longer, more specific search phrases that individually have lower search volume than broad keywords, but collectively account for a large share of searches and often convert better.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Search Intent

The underlying goal behind a search query, typically categorized as informational, navigational, transactional or commercial investigation.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

XML Sitemap

A file listing a website's URLs in a structured format, submitted to search engines to help them discover and understand which pages to crawl and index.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Voice Search

Search conducted by speaking a query aloud to a device or assistant, typically answered with a single spoken result rather than a list of links.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Local SEO

The practice of optimizing a business's online presence to appear in geographically relevant search results, such as Google Business Profile listings and "near me" queries.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Passage Ranking

The ability of a search or AI system to identify and rank a specific, relevant section of a page, rather than the page as a whole, in response to a query.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Core Web Vitals

Google's set of page experience metrics (LCP, INP and CLS) that measure loading speed, interactivity and visual stability, used as a ranking signal and a general indicator of site quality.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Backlinks (Netlinking)

Links from other websites pointing to a page, historically one of the strongest ranking signals in search and still a core trust signal for AI systems evaluating a source.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Domain Authority

A third-party metric, popularized by Moz, that scores a website's overall likelihood to rank in search results on a 1-100 scale, based mainly on its backlink profile.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Semantic Search

A search approach that matches content to a query based on meaning and intent rather than exact keyword overlap.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Context Window

The maximum amount of text, measured in tokens, that an AI model can consider at once when generating a response, including the prompt, conversation history and retrieved content.

ai-engines-generative-ai-cat

Foundation Models

Large-scale AI models trained on broad, general data that serve as the base for many downstream applications, chat assistants and AI search products.

ai-engines-generative-ai-cat

Multimodal Search

Search that accepts and combines multiple types of input, such as text, images, video or voice, rather than text queries alone.

ai-engines-generative-ai-cat

Fine-tuning

The process of further training an existing AI model on a specific, smaller dataset to specialize its behavior for a particular task, domain or tone.

ai-engines-generative-ai-cat

Vector Search (Embeddings)

A method of finding relevant content by comparing its meaning, represented as numerical vectors called embeddings, rather than matching exact keywords.

ai-engines-generative-ai-cat

Prompt Engineering

The practice of designing and refining the instructions given to an AI model to reliably get accurate, relevant and well-structured responses.

ai-engines-generative-ai-cat

Knowledge Graph

A structured database of entities (people, places, organizations, products) and the relationships between them, used by search engines and AI systems to understand and connect facts.

ai-engines-generative-ai-cat

Conversational Search

A search interaction carried out as a natural-language dialogue, often across multiple turns, rather than as a single keyword query typed into a search box.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat

AI Crawlers

The automated bots that AI companies use to fetch and index web content for training data, retrieval-augmented generation, or real-time citations in chat answers.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat

llms.txt

A plain-text file at a website's root that gives AI crawlers and language models a curated, structured summary of the site's key pages and content.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat

Entity SEO

Entity SEO is the practice of optimizing content and structured data around named entities, such as people, organizations, products and concepts, so that search and AI engines can correctly identify, disambiguate and associate them.

content-brand-strategy-cat

Brand Monitoring

Brand monitoring is the ongoing practice of tracking where and how a brand is mentioned across the web, including news, social media, review sites, forums and AI-generated answers.

content-brand-strategy-cat

Content Clusters

Content clusters are a content architecture that organizes a broad topic into a central pillar page linked to multiple subtopic pages, helping both search engines and AI systems understand the full scope of a site's coverage on a subject.

content-brand-strategy-cat

Topical Authority

Topical authority is the degree to which a website is recognized by search and AI engines as a comprehensive, trustworthy source on a specific subject area, built through breadth and depth of content rather than a single page.

content-brand-strategy-cat

Source Citation

Source citation is the act of an AI engine explicitly attributing a fact or answer to a specific webpage, typically with a clickable link, inside a generated response.

ai-visibility-analytics-cat

Prompt Volume

Prompt volume is the number of distinct prompts, or the panel size, tracked to measure a brand's visibility across AI search engines.

ai-visibility-analytics-cat

AI Brand Mentions

AI brand mentions are the instances where an AI search engine or chatbot names a brand, product or company in a generated answer, whether cited as a source or not.

ai-visibility-analytics-cat

AI Share of Voice

AI Share of Voice measures what percentage of AI-generated mentions in a competitive topic go to a given brand compared to its competitors.

ai-visibility-analytics-cat

Citation Rate

Citation rate is the share of a brand's mentions in AI-generated answers that come with an explicit source link, rather than being mentioned without attribution.

ai-visibility-analytics-cat

AI Visibility Score

An AI Visibility Score is a single composite metric that summarizes how often, how accurately and how prominently a brand appears in AI-generated answers across engines.

ai-visibility-analytics-cat

Zero-Click Search

A zero-click search is a search query that Google or another engine fully answers on the results page itself, so the searcher never clicks through to a website.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Featured Snippets

A featured snippet is a highlighted answer box shown above regular results in Google Search, pulled directly from a ranking page's content.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Schema Markup

Schema markup is structured data code, most commonly written in JSON-LD, that helps search engines and AI systems understand exactly what a page's content means.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

E-E-A-T

E-E-A-T stands for Experience, Expertise, Authoritativeness and Trustworthiness, the quality framework Google's Search Quality Rater Guidelines use to judge how credible and reliable content is.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

Search Engine Optimization (SEO)

Search Engine Optimization (SEO) is the practice of improving a website's technical health, content and authority so it ranks higher in organic search results and earns more qualified traffic.

Update :

August 31, 2026

Category:

SEO (Search Engine Optimization)

seo-cat

AI Grounding

The process of anchoring an AI model's answer in verifiable, external data instead of letting it rely only on what it memorized during training.

ai-engines-generative-ai-cat

AI Hallucination

When an AI model generates information that sounds plausible and confident but is factually wrong or entirely made up.

ai-engines-generative-ai-cat

Large Language Model (LLM)

An AI model trained on massive amounts of text to understand and generate natural language, the technology behind ChatGPT, Gemini, Claude and most AI search engines.

ai-engines-generative-ai-cat

Retrieval-Augmented Generation (RAG)

A technique that lets an AI model pull real, up-to-date information from an external source before generating its answer, instead of relying only on what it learned during training.

ai-engines-generative-ai-cat

AI Mode

Google's conversational AI search mode that answers complex questions with a synthesized, multi-source, cited response instead of a list of links.

ai-engines-generative-ai-cat

AI Overview

AI Overview is Google's AI-generated summary shown above traditional results, pulling from multiple web sources to answer a query directly.

ai-engines-generative-ai-cat

Agentic Browsing

Agentic browsing is when an AI agent autonomously navigates, reads and interacts with websites on a user's behalf, instead of a human clicking through pages.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat

Query Fan-Out

Query fan-out is the technique AI search systems use to break one user question into several sub-queries run in parallel before generating a single answer.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat

Prompt Monitoring

Prompt monitoring is the practice of running a fixed panel of prompts across AI engines on a recurring basis to track how a brand appears in the answers.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat

AI Citation Optimization

AI citation optimization is the practice of shaping content so AI search engines select it as a cited source, not just a mentioned topic, inside generated answers.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat

AI Search Visibility

AI search visibility is how often and how accurately a brand, product or piece of content appears in the answers generated by AI search engines and chatbots.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat

LLM SEO

LLM SEO refers to adapting classic SEO practices, technical foundations, content structure and authority signals, so pages perform well when AI systems retrieve and cite them.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat

LLM Optimization (LLMO)

LLM Optimization (LLMO) is the practice of optimizing content and data so large language models learn accurate information and reproduce it correctly.

Update :

August 31, 2026

Category:

GEO (Generative Engine Optimization)

geo-cat